[3.16.y-ckt stable] Patch "net: eth: altera: fix napi poll_list corruption" has been added to staging queue

[Kamal Mostafa]

This is a note to let you know that I have just added a patch titled

    net: eth: altera: fix napi poll_list corruption

to the linux-3.16.y-queue branch of the 3.16.y-ckt extended stable tree 
which can be found at:

    http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-3.16.y-queue

This patch is scheduled to be released in version 3.19.8-ckt9.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.16.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Kamal

------

>From 02eaeb252c09fffa484b25a40d74d2703ae3dde4 Mon Sep 17 00:00:00 2001
From: Atsushi Nemoto <nemoto at toshiba-tops.co.jp>
Date: Wed, 2 Sep 2015 17:49:29 +0900
Subject: net: eth: altera: fix napi poll_list corruption

[ Upstream commit 4548a697e4969d695047cebd6d9af5e2f6cc728e ]

tse_poll() calls __napi_complete() with irq enabled.  This leads napi
poll_list corruption and may stop all napi drivers working.
Use napi_complete() instead of __napi_complete().

Signed-off-by: Atsushi Nemoto <nemoto at toshiba-tops.co.jp>
Signed-off-by: David S. Miller <davem at davemloft.net>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
 drivers/net/ethernet/altera/altera_tse_main.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/altera/altera_tse_main.c b/drivers/net/ethernet/altera/altera_tse_main.c
index 760c72c..f2aa89b 100644
--- a/drivers/net/ethernet/altera/altera_tse_main.c
+++ b/drivers/net/ethernet/altera/altera_tse_main.c
@@ -501,8 +501,7 @@ static int tse_poll(struct napi_struct *napi, int budget)
 	if (rxcomplete >= budget || txcomplete > 0)
 		return rxcomplete;

-	napi_gro_flush(napi, false);
-	__napi_complete(napi);
+	napi_complete(napi);

 	netdev_dbg(priv->dev,
 		   "NAPI Complete, did %d packets with budget %d\n",
--
1.9.1